Math 8 Midterm

Front

What is the definition of a negative slope in a linear equation?

Back

A negative slope indicates that as the x-value increases, the y-value decreases, resulting in a downward slant from left to right.

Front

Identify the equation with a negative slope: y= 3x + 5, y= 3x - 5, y= -3x - 5.

Back

y= -3x - 5

Front

How do you calculate the unit rate from a total cost and quantity?

Back

Divide the total cost by the quantity to find the cost per unit.

Front

If you spend $40 on 5 pounds of concrete, what is the unit rate in dollars per pound?

Back

$8 per pound

Front

What is the process to solve the equation 6x + 7 = 13 + 7x?

Back

Rearrange the equation to isolate x: 6x - 7x = 13 - 7, resulting in x = -6.

Front

What is the square root of 121?

Back

11

Front

Define an irrational number.

Back

An irrational number cannot be expressed as a fraction of two integers and has a non-repeating, non-terminating decimal expansion.

Front

Classify the number π: integer, rational, irrational, or imaginary.

Back

Irrational

Front

What is the formula for finding the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope m is calculated as m = (y2 - y1) / (x2 - x1).

Front

What does it mean for a number to be classified as rational?

Back

A rational number can be expressed as a fraction where both the numerator and denominator are integers.